>> >> Supposedly, our universe is closed and finite, although the>> geometry and topology isn't precisely known. This means>> a straight line (geodesic) traveler must return to his starting>> poiint, yes/no? Hence, curved space.>> >> At the same time, astronomers claim, that space is flat, to>> the precision of their measurements. Usually, this is>> accompanied by the comment that the universe is balanced>> between infinite expansion, or eventual collapse, we can't>> tell which.>> >> So, space is closed, but also flat... back in my day, they>> had something called a logical contradiction, which was>> considered a bad thing, but I guess times change...>> viva progress -

No, the questions are why the OP is making a false claim and and whythe OP is falsely claiming a logical contradiction.

"Supposedly, our universe is closed and finite" is untrue; what istrue is that GR allows for the possibility and that a sufficientlylatge density of matter would require it. The observed density isn'tlarge enough.

What is worse is that there is no logical contradiction between aclosed universe and a flat universe.